* lib/mkmf.rb (have_library): treat nil function name as "main".

  (ruby-bugs:PR#1083)


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4338 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/mkmf.rb b/lib/mkmf.rb
index 5d63277db7..d21fa4f8b6 100644
--- a/lib/mkmf.rb
+++ b/lib/mkmf.rb
@@ -446,14 +446,14 @@ def checking_for(m)
   r
 end
 
-def have_library(lib, func="main")
-  func &&= ((m = "#{func}() in "; func) unless func.empty?)
-  checking_for "#{m}-l#{lib}" do
+def have_library(lib, func=nil)
+  func = "main" if !func or func.empty?
+  checking_for "#{func}() in -l#{lib}" do
     if COMMON_LIBS.include?(lib)
       true
     else
       libs = append_library($libs, lib)
-      if !func || try_func(func, libs)
+      if try_func(func, libs)
         $libs = libs
         true
       else